163255503 has 4 divisors (see below), whose sum is σ = 217674008. Its totient is φ = 108837000.

The previous prime is 163255501. The next prime is 163255577. The reversal of 163255503 is 305552361.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 163255503 - 2¹ = 163255501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163255501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27209248 + ... + 27209253.

It is an arithmetic number, because the mean of its divisors is an integer number (54418502).

Almost surely, 2^163255503 is an apocalyptic number.

163255503 is a deficient number, since it is larger than the sum of its proper divisors (54418505).

163255503 is an equidigital number, since it uses as much as digits as its factorization.

163255503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54418504.

The product of its (nonzero) digits is 13500, while the sum is 30.

The square root of 163255503 is about 12777.1476863970. The cubic root of 163255503 is about 546.5408272133.

The spelling of 163255503 in words is "one hundred sixty-three million, two hundred fifty-five thousand, five hundred three".